<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<script type="text/javascript" src="../basic/jquery-1.8.3.min.js"></script>
</head>
<body>
	<ul id="one" class="level-1">
		<li class="item-i">I</li>
		<li id="ii" class="item-ii">II
			<ul class="level-2">
				<li class="item-a">A</li>
				<li class="item-b">B
					<ul class="level-3">
						<li class="item-1">1</li>
						<li class="item-2">2</li>
						<li class="item-3">3</li>
					</ul>
				</li>
				<li class="item-c">C</li>
			</ul>
		</li>
		<li class="item-iii">III</li>
	</ul>
</body>
</html>